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Dr. Jonathan Siegfried, MD
NPI1720251549PAC ID6002055910
- Medicare services, 2024
- 899
- Medicare patients, 2024
- 428
- Part D claims, 2024
- 857
- Publications
- 2
- MIPS score, 2024
- 90
- Practice address
- 250 W Main St, Branford, CT 06405
- Practice phone
- Call (860) 246-2071
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Hartford Healthcare Medical Group Specialists
Branford, Connecticut
Find Dr. Siegfried's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Jonathan Siegfried is a cardiologist in Branford, Connecticut
Dr. Siegfried practices at Hartford Healthcare Medical Group Specialists in Branford, Connecticut.
Dr. Siegfried's NPI, 1720251549, was assigned on April 12, 2008. Dr. Siegfried graduated from New York University School of Medicine in 2008. Dr. Siegfried holds Connecticut license 54031.
NPI and contact details
- NPI
- 1720251549NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6002055910
- NPI enumeration date
- April 12, 2008
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (860) 246-2071
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 44
- Medical school graduation
- 2008
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Jonathan Siegfried practices at Hartford Healthcare Medical Group Specialists in Branford, Connecticut
Dr. Siegfried's primary practice is Hartford Healthcare Medical Group Specialists, at 250 W Main St, Branford, CT 06405 in South Central Ct County. The practice phone is (860) 246-2071.
- Hartford Healthcare Medical Group Specialists250 W Main St, Branford, CT 06405 · South Central Ct CountyPhone(860) 246-2071
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Jonathan Siegfried is affiliated with 6 sites of care and 2 medical groups
Dr. Siegfried's primary practice is Hartford Healthcare Medical Group Specialists in Branford, Connecticut. Dr. Siegfried is also affiliated with Yale New Haven Hospital. The medical group on file is Hartford HealthCare Medical Group Specialists. Dmand AI also links Dr. Siegfried to 2 more hospitals, 2 group practices and clinics and 1 medical group, each named with a free account.
Hartford Healthcare Medical Group SpecialistsPrimary
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Jonathan Siegfried's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Siegfried practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Hartford Healthcare Medical Group Specialists | Available with a free account |
| +5 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Jonathan Siegfried is one of 423 cardiologists in Connecticut
Cardiovascular disease is Dr. Siegfried's primary specialty in the NPI Registry, under taxonomy code 207RC0000X. Dmand AI has Dr. Siegfried's licenses on file in 2 states: Connecticut and New York.
Specialties and state licenses
- Cardiovascular disease, ConnecticutPrimary
- Internal medicine, New York
Cardiologists near Dr. Siegfried
Counts of cardiologists with a Dmand AI profile, by place and practice. Each opens the list.
423cardiologists in Connecticut
7cardiologists in Branford
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Jonathan Siegfried billed Medicare for 899 services in 2024
CMS data shows 899 Medicare services from Dr. Siegfried across 17 procedure codes in 2024, for 428 Medicare patients. Medicare paid $85,734 for them.
Medicare services, 2024899
Medicare patients428
Paid by Medicare$85,734
Procedure codes17
Dr. Siegfried's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Tests and treatments
- 2023: 4152024: 47414%
- Office and hospital visits
- 2023: 3872024: 3714%
- Other services
- 2023: 562024: 3636%
- Imaging
- 2023: 282024: 1836%
- Drugs given in the office
- 2023: 722024: 0100%
Where Dr. Siegfried's Medicare services took place, 2024
- In an office77386%
- In a facility12614%
Dr. Siegfried compared with the Connecticut median for cardiologists, 2024
- Dr. Siegfried
- Connecticut median
- Medicare services
- 899vs 1,35834% below
- Medicare patients
- 428vs 68037% below
- Part D claims
- 722vs 1,57354% below
Medians across 415 cardiologists in Connecticut with Dmand AI profiles that report each measure.
Dr. Siegfried's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Jonathan Siegfried treated 428 Medicare patients in 2024, average age 77
CMS counts 428 Medicare patients who saw Dr. Siegfried in 2024. The largest group is 75 to 84, with 175 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 18% are also on Medicaid. Their average risk score is 1.50, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Siegfried's median patient age at 70, with 44% women.
Medicare patients, 2024428
Average age77
Average risk score1.50
Also on Medicaid18%
Dr. Siegfried's Medicare patients by age, 2024
Dr. Siegfried's Medicare patients by sex, 2024
- Women21851%
- Men21049%
Chronic conditions among Dr. Siegfried's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis55%
- Ischemic heart disease44%
- Diabetes36%
- Chronic kidney disease32%
- Atrial fibrillation30%
- Heart failure29%
Share of Medicare patients with each condition. A patient can have several.
Dr. Siegfried's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 70
Patient panel by sex, all payers
- Women44%
- Men54%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Jonathan Siegfried wrote 857 Medicare Part D claims in 2024
In 2024, Dr. Siegfried wrote 857 Medicare Part D claims for 239 patients. 85% of them were for generic drugs. CMS names the drug for 722 of them, across 19 drugs with 11 or more claims each, at $150,928 in total drug cost. In 2023, CMS named 575 claims across 16 drugs.
Part D claims, 2024857
Drugs named by CMS19
Total drug cost$150,928
Part D patients239
Dr. Siegfried's Part D claims by kind of drug, 2024
- Generic731 claims85%
- Brand-name126 claims15%
Dr. Siegfried's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 5752024: 72226%
Drugs named by CMS: 19 in 2024, 16 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Jonathan Siegfried scored 90 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 90 out of 100 for Dr. Siegfried for performance year 2024, reported as part of a group. Dr. Siegfried accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Siegfried's MIPS scores, performance year 2024
- 90of 100Final score
- 83.4of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 76of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Coronary angioplasty and stenting: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Jonathan Siegfried has 2 publications on record
Dmand AI links 2 papers to Dr. Siegfried in 2014. Dr. Siegfried's most frequent co-authors are Satjit Bhusri, MD, Neil Lawrence Coplan, MD and Nils A. Guttenplan, MD.
Papers2
Dr. Siegfried's most frequent co-authors
- Satjit Bhusri, MD1 shared paper
- Neil Lawrence Coplan, MD1 shared paper
- Nils A. Guttenplan, MD1 shared paper
Recent publications by Dr. Siegfried
Coronary AngiographyCoronary Artery DiseaseMyocardial Infarction
See who Dr. Siegfried researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Siegfried works with, so you can find a warm path to the right cardiologists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Jonathan Siegfried received $3,649 in industry payments from 2016 to 2025
CMS Open Payments shows 222 general payments to Dr. Siegfried from 22 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 99% of the total. Janssen Pharmaceuticals, Inc paid the most, $785.
General payments to Dr. Siegfried by program year, 2016 to 2025
General payments to Dr. Siegfried by kind, 2016 to 2025
$3.6Kin total
- Food and beverage$3,61499%
- Education$351%
Companies that paid Dr. Siegfried the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Jonathan Siegfried graduated from New York University School of Medicine
Dr. Siegfried graduated from New York University School of Medicine in 2008.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Jonathan Siegfried's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Jonathan Siegfried
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Jonathan Siegfried's NPI number?
Dr. Jonathan Siegfried's NPI number is 1720251549. It was assigned on April 12, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. Jonathan Siegfried?
Dr. Jonathan Siegfried is a cardiologist in Branford, Connecticut. The primary specialty in the NPI Registry is Cardiovascular Disease Physician (taxonomy code 207RC0000X).
Where does Dr. Jonathan Siegfried practice?
Dr. Siegfried practices at 250 W Main St, Branford, CT 06405. Dr. Siegfried's primary practice is Hartford Healthcare Medical Group Specialists in Branford, Connecticut. Dmand AI also links Dr. Siegfried to 2 hospitals, 2 group practices and clinics and 1 medical group.
What is Dr. Jonathan Siegfried's office phone number?
The practice phone on file for Dr. Siegfried is (860) 246-2071.
What is Dr. Jonathan Siegfried's medical license number?
Dr. Siegfried holds Connecticut license 54031, one of the licenses on file in 2 states.
Which states has Dr. Jonathan Siegfried been licensed in?
Dmand AI has state licenses on file for Dr. Siegfried in Connecticut and New York.
Which hospitals is Dr. Jonathan Siegfried affiliated with?
Dr. Siegfried is affiliated with Yale New Haven Hospital. Dmand AI links Dr. Siegfried to 2 more hospitals.
What medical group is Dr. Jonathan Siegfried part of?
Dr. Siegfried is linked to Hartford HealthCare Medical Group Specialists. Dmand AI links Dr. Siegfried to 1 more medical group.
Does Dr. Jonathan Siegfried accept Medicare?
Yes. CMS data shows Dr. Siegfried billed Medicare for 899 services in 2024, and Dr. Siegfried accepts Medicare assignment.
What is Dr. Jonathan Siegfried's MIPS score?
Dr. Siegfried's MIPS final score for performance year 2024 is 90 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Jonathan Siegfried see?
CMS counts 428 Medicare patients who saw Dr. Siegfried in 2024, with an average age of 77.
What services does Dr. Jonathan Siegfried bill to Medicare?
In 2024, Dr. Siegfried's most billed Medicare services were office visit, established patient (99214), heart test or procedure (93306) and heart test or procedure (93000).
Where did Dr. Jonathan Siegfried go to medical school?
Dr. Siegfried graduated from New York University School of Medicine in 2008.
What drugs does Dr. Jonathan Siegfried prescribe most?
In 2024 Medicare Part D data, Dr. Siegfried's most prescribed drugs by claims were Carvedilol, Atorvastatin Calcium and Losartan Potassium.
Has Dr. Jonathan Siegfried received payments from drug or device companies?
CMS Open Payments shows $3,649 in general payments to Dr. Siegfried from 22 companies from 2016 to 2025. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. Jonathan Siegfried been practicing?
Dr. Siegfried graduated from medical school in 2008, 18 years ago.
Does Dr. Jonathan Siegfried do research?
Dmand AI links 2 publications to Dr. Siegfried.
Who does Dr. Jonathan Siegfried publish with?
Dr. Siegfried's most frequent co-authors are Satjit Bhusri, MD (1 shared paper), Neil Lawrence Coplan, MD (1 shared paper) and Nils A. Guttenplan, MD (1 shared paper).
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